Finding the Third Proportional to 915,550 and 1,988,720

Step by Step Solution

1. Step 1: Write the proportion equation
   915,550 : 1,988,720 = 1,988,720 : x
2. Step 2: Convert to fraction form
   915,550/1,988,720 = 1,988,720/x
3. Step 3: Cross multiply
   915,550x = 1,988,720 × 1,988,720
4. Step 4: Simplify right side
   915,550x = 3,955,007,238,400
5. Step 5: Solve for x
   x = 3,955,007,238,400/915,550
6. Step 6: Final answer
   x = 4,319,815.67