Finding the Third Proportional to 690,522 and 1,059,840

Step by Step Solution

1. Step 1: Write the proportion equation
   690,522 : 1,059,840 = 1,059,840 : x
2. Step 2: Convert to fraction form
   690,522/1,059,840 = 1,059,840/x
3. Step 3: Cross multiply
   690,522x = 1,059,840 × 1,059,840
4. Step 4: Simplify right side
   690,522x = 1,123,260,825,600
5. Step 5: Solve for x
   x = 1,123,260,825,600/690,522
6. Step 6: Final answer
   x = 1,626,683.62