Finding the Third Proportional to 915,560 and 1,988,738

Step by Step Solution

1. Step 1: Write the proportion equation
   915,560 : 1,988,738 = 1,988,738 : x
2. Step 2: Convert to fraction form
   915,560/1,988,738 = 1,988,738/x
3. Step 3: Cross multiply
   915,560x = 1,988,738 × 1,988,738
4. Step 4: Simplify right side
   915,560x = 3,955,078,832,644
5. Step 5: Solve for x
   x = 3,955,078,832,644/915,560
6. Step 6: Final answer
   x = 4,319,846.69