Finding the Third Proportional to 10,108,013,553 and 21,618,155,209.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,108,013,553 : 21,618,155,209.50 = 21,618,155,209.50 : x
2. Step 2: Convert to fraction form
   10,108,013,553/21,618,155,209.50 = 21,618,155,209.50/x
3. Step 3: Cross multiply
   10,108,013,553x = 21,618,155,209.50 × 21,618,155,209.50
4. Step 4: Simplify right side
   10,108,013,553x = 467,344,634,662,031,982,592
5. Step 5: Solve for x
   x = 467,344,634,662,031,982,592/10,108,013,553
6. Step 6: Final answer
   x = 46,235,062,132.79