Finding the Third Proportional to 866,422 and 2,087,317

Step by Step Solution

1. Step 1: Write the proportion equation
   866,422 : 2,087,317 = 2,087,317 : x
2. Step 2: Convert to fraction form
   866,422/2,087,317 = 2,087,317/x
3. Step 3: Cross multiply
   866,422x = 2,087,317 × 2,087,317
4. Step 4: Simplify right side
   866,422x = 4,356,892,258,489
5. Step 5: Solve for x
   x = 4,356,892,258,489/866,422
6. Step 6: Final answer
   x = 5,028,602.99