Finding the Third Proportional to 915,774 and 1,989,188

Step by Step Solution

1. Step 1: Write the proportion equation
   915,774 : 1,989,188 = 1,989,188 : x
2. Step 2: Convert to fraction form
   915,774/1,989,188 = 1,989,188/x
3. Step 3: Cross multiply
   915,774x = 1,989,188 × 1,989,188
4. Step 4: Simplify right side
   915,774x = 3,956,868,899,344
5. Step 5: Solve for x
   x = 3,956,868,899,344/915,774
6. Step 6: Final answer
   x = 4,320,791.92