Finding the Third Proportional to 342,290 and 763,285.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,290 : 763,285.50 = 763,285.50 : x
2. Step 2: Convert to fraction form
   342,290/763,285.50 = 763,285.50/x
3. Step 3: Cross multiply
   342,290x = 763,285.50 × 763,285.50
4. Step 4: Simplify right side
   342,290x = 582,604,754,510.25
5. Step 5: Solve for x
   x = 582,604,754,510.25/342,290
6. Step 6: Final answer
   x = 1,702,079.39