Finding the Third Proportional to 719,478 and 1,039,440

Step by Step Solution

1. Step 1: Write the proportion equation
   719,478 : 1,039,440 = 1,039,440 : x
2. Step 2: Convert to fraction form
   719,478/1,039,440 = 1,039,440/x
3. Step 3: Cross multiply
   719,478x = 1,039,440 × 1,039,440
4. Step 4: Simplify right side
   719,478x = 1,080,435,513,600
5. Step 5: Solve for x
   x = 1,080,435,513,600/719,478
6. Step 6: Final answer
   x = 1,501,693.61