Finding the Third Proportional to 690,432 and 1,059,708

Step by Step Solution

1. Step 1: Write the proportion equation
   690,432 : 1,059,708 = 1,059,708 : x
2. Step 2: Convert to fraction form
   690,432/1,059,708 = 1,059,708/x
3. Step 3: Cross multiply
   690,432x = 1,059,708 × 1,059,708
4. Step 4: Simplify right side
   690,432x = 1,122,981,045,264
5. Step 5: Solve for x
   x = 1,122,981,045,264/690,432
6. Step 6: Final answer
   x = 1,626,490.44