Finding the Third Proportional to 116,415 and 249,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   116,415 : 249,436.50 = 249,436.50 : x
2. Step 2: Convert to fraction form
   116,415/249,436.50 = 249,436.50/x
3. Step 3: Cross multiply
   116,415x = 249,436.50 × 249,436.50
4. Step 4: Simplify right side
   116,415x = 62,218,567,532.25
5. Step 5: Solve for x
   x = 62,218,567,532.25/116,415
6. Step 6: Final answer
   x = 534,454.90