Finding the Third Proportional to 478,786.50 and 711,397

Step by Step Solution

1. Step 1: Write the proportion equation
   478,786.50 : 711,397 = 711,397 : x
2. Step 2: Convert to fraction form
   478,786.50/711,397 = 711,397/x
3. Step 3: Cross multiply
   478,786.50x = 711,397 × 711,397
4. Step 4: Simplify right side
   478,786.50x = 506,085,691,609
5. Step 5: Solve for x
   x = 506,085,691,609/478,786.50
6. Step 6: Final answer
   x = 1,057,017.46