Finding the Third Proportional to 365,557.50 and 545,292

Step by Step Solution

1. Step 1: Write the proportion equation
   365,557.50 : 545,292 = 545,292 : x
2. Step 2: Convert to fraction form
   365,557.50/545,292 = 545,292/x
3. Step 3: Cross multiply
   365,557.50x = 545,292 × 545,292
4. Step 4: Simplify right side
   365,557.50x = 297,343,365,264
5. Step 5: Solve for x
   x = 297,343,365,264/365,557.50
6. Step 6: Final answer
   x = 813,396.98