Finding the Third Proportional to 292,707.74 and 439,061.61

Step by Step Solution

1. Step 1: Write the proportion equation
   292,707.74 : 439,061.61 = 439,061.61 : x
2. Step 2: Convert to fraction form
   292,707.74/439,061.61 = 439,061.61/x
3. Step 3: Cross multiply
   292,707.74x = 439,061.61 × 439,061.61
4. Step 4: Simplify right side
   292,707.74x = 192,775,095,111.89
5. Step 5: Solve for x
   x = 192,775,095,111.89/292,707.74
6. Step 6: Final answer
   x = 658,592.41