Finding the Third Proportional to 4,538,972 and 9,834,412

Step by Step Solution

1. Step 1: Write the proportion equation
   4,538,972 : 9,834,412 = 9,834,412 : x
2. Step 2: Convert to fraction form
   4,538,972/9,834,412 = 9,834,412/x
3. Step 3: Cross multiply
   4,538,972x = 9,834,412 × 9,834,412
4. Step 4: Simplify right side
   4,538,972x = 96,715,659,385,744
5. Step 5: Solve for x
   x = 96,715,659,385,744/4,538,972
6. Step 6: Final answer
   x = 21,307,833.44