Finding the Third Proportional to 99,422,040 and 216,053,641.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,422,040 : 216,053,641.50 = 216,053,641.50 : x
2. Step 2: Convert to fraction form
   99,422,040/216,053,641.50 = 216,053,641.50/x
3. Step 3: Cross multiply
   99,422,040x = 216,053,641.50 × 216,053,641.50
4. Step 4: Simplify right side
   99,422,040x = 46,679,176,005,410,520
5. Step 5: Solve for x
   x = 46,679,176,005,410,520/99,422,040
6. Step 6: Final answer
   x = 469,505,312.96