Finding the Third Proportional to 423,298.50 and 655,710

Step by Step Solution

1. Step 1: Write the proportion equation
   423,298.50 : 655,710 = 655,710 : x
2. Step 2: Convert to fraction form
   423,298.50/655,710 = 655,710/x
3. Step 3: Cross multiply
   423,298.50x = 655,710 × 655,710
4. Step 4: Simplify right side
   423,298.50x = 429,955,604,100
5. Step 5: Solve for x
   x = 429,955,604,100/423,298.50
6. Step 6: Final answer
   x = 1,015,726.74