Finding the Third Proportional to 342,461.50 and 545,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,461.50 : 545,404.50 = 545,404.50 : x
2. Step 2: Convert to fraction form
   342,461.50/545,404.50 = 545,404.50/x
3. Step 3: Cross multiply
   342,461.50x = 545,404.50 × 545,404.50
4. Step 4: Simplify right side
   342,461.50x = 297,466,068,620.25
5. Step 5: Solve for x
   x = 297,466,068,620.25/342,461.50
6. Step 6: Final answer
   x = 868,611.71