Finding the Third Proportional to 709,663 and 1,123,585

Step by Step Solution

1. Step 1: Write the proportion equation
   709,663 : 1,123,585 = 1,123,585 : x
2. Step 2: Convert to fraction form
   709,663/1,123,585 = 1,123,585/x
3. Step 3: Cross multiply
   709,663x = 1,123,585 × 1,123,585
4. Step 4: Simplify right side
   709,663x = 1,262,443,252,225
5. Step 5: Solve for x
   x = 1,262,443,252,225/709,663
6. Step 6: Final answer
   x = 1,778,933.45