Finding the Third Proportional to 691,128 and 1,031,364

Step by Step Solution

1. Step 1: Write the proportion equation
   691,128 : 1,031,364 = 1,031,364 : x
2. Step 2: Convert to fraction form
   691,128/1,031,364 = 1,031,364/x
3. Step 3: Cross multiply
   691,128x = 1,031,364 × 1,031,364
4. Step 4: Simplify right side
   691,128x = 1,063,711,700,496
5. Step 5: Solve for x
   x = 1,063,711,700,496/691,128
6. Step 6: Final answer
   x = 1,539,095.07