Finding the Third Proportional to 99,422,039.50 and 216,053,640.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,422,039.50 : 216,053,640.50 = 216,053,640.50 : x
2. Step 2: Convert to fraction form
   99,422,039.50/216,053,640.50 = 216,053,640.50/x
3. Step 3: Cross multiply
   99,422,039.50x = 216,053,640.50 × 216,053,640.50
4. Step 4: Simplify right side
   99,422,039.50x = 46,679,175,573,303,240
5. Step 5: Solve for x
   x = 46,679,175,573,303,240/99,422,039.50
6. Step 6: Final answer
   x = 469,505,310.98