Finding the Third Proportional to 152,921 and 359,792.50

Step by Step Solution

1. Step 1: Write the proportion equation
   152,921 : 359,792.50 = 359,792.50 : x
2. Step 2: Convert to fraction form
   152,921/359,792.50 = 359,792.50/x
3. Step 3: Cross multiply
   152,921x = 359,792.50 × 359,792.50
4. Step 4: Simplify right side
   152,921x = 129,450,643,056.25
5. Step 5: Solve for x
   x = 129,450,643,056.25/152,921
6. Step 6: Final answer
   x = 846,519.73