Finding the Third Proportional to 915,542 and 1,988,705

Step by Step Solution

1. Step 1: Write the proportion equation
   915,542 : 1,988,705 = 1,988,705 : x
2. Step 2: Convert to fraction form
   915,542/1,988,705 = 1,988,705/x
3. Step 3: Cross multiply
   915,542x = 1,988,705 × 1,988,705
4. Step 4: Simplify right side
   915,542x = 3,954,947,577,025
5. Step 5: Solve for x
   x = 3,954,947,577,025/915,542
6. Step 6: Final answer
   x = 4,319,788.25