Finding the Third Proportional to 21,921,057 and 30,646,927.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,921,057 : 30,646,927.50 = 30,646,927.50 : x
2. Step 2: Convert to fraction form
   21,921,057/30,646,927.50 = 30,646,927.50/x
3. Step 3: Cross multiply
   21,921,057x = 30,646,927.50 × 30,646,927.50
4. Step 4: Simplify right side
   21,921,057x = 939,234,165,190,256.25
5. Step 5: Solve for x
   x = 939,234,165,190,256.25/21,921,057
6. Step 6: Final answer
   x = 42,846,207.88