Finding the Third Proportional to 10,663,857 and 15,238,651.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,663,857 : 15,238,651.50 = 15,238,651.50 : x
2. Step 2: Convert to fraction form
   10,663,857/15,238,651.50 = 15,238,651.50/x
3. Step 3: Cross multiply
   10,663,857x = 15,238,651.50 × 15,238,651.50
4. Step 4: Simplify right side
   10,663,857x = 232,216,499,538,452.25
5. Step 5: Solve for x
   x = 232,216,499,538,452.25/10,663,857
6. Step 6: Final answer
   x = 21,776,032.77