Finding the Third Proportional to 342,468 and 545,410

Step by Step Solution

1. Step 1: Write the proportion equation
   342,468 : 545,410 = 545,410 : x
2. Step 2: Convert to fraction form
   342,468/545,410 = 545,410/x
3. Step 3: Cross multiply
   342,468x = 545,410 × 545,410
4. Step 4: Simplify right side
   342,468x = 297,472,068,100
5. Step 5: Solve for x
   x = 297,472,068,100/342,468
6. Step 6: Final answer
   x = 868,612.74