Finding the Third Proportional to 302,587.50 and 658,407

Step by Step Solution

1. Step 1: Write the proportion equation
   302,587.50 : 658,407 = 658,407 : x
2. Step 2: Convert to fraction form
   302,587.50/658,407 = 658,407/x
3. Step 3: Cross multiply
   302,587.50x = 658,407 × 658,407
4. Step 4: Simplify right side
   302,587.50x = 433,499,777,649
5. Step 5: Solve for x
   x = 433,499,777,649/302,587.50
6. Step 6: Final answer
   x = 1,432,642.72