Finding the Third Proportional to 99,639 and 234,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,639 : 234,436.50 = 234,436.50 : x
2. Step 2: Convert to fraction form
   99,639/234,436.50 = 234,436.50/x
3. Step 3: Cross multiply
   99,639x = 234,436.50 × 234,436.50
4. Step 4: Simplify right side
   99,639x = 54,960,472,532.25
5. Step 5: Solve for x
   x = 54,960,472,532.25/99,639
6. Step 6: Final answer
   x = 551,595.99