Finding the Third Proportional to 342,477 and 545,425.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,477 : 545,425.50 = 545,425.50 : x
2. Step 2: Convert to fraction form
   342,477/545,425.50 = 545,425.50/x
3. Step 3: Cross multiply
   342,477x = 545,425.50 × 545,425.50
4. Step 4: Simplify right side
   342,477x = 297,488,976,050.25
5. Step 5: Solve for x
   x = 297,488,976,050.25/342,477
6. Step 6: Final answer
   x = 868,639.28