Finding the Third Proportional to 1,118,916 and 1,687,662

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118,916 : 1,687,662 = 1,687,662 : x
2. Step 2: Convert to fraction form
   1,118,916/1,687,662 = 1,687,662/x
3. Step 3: Cross multiply
   1,118,916x = 1,687,662 × 1,687,662
4. Step 4: Simplify right side
   1,118,916x = 2,848,203,026,244
5. Step 5: Solve for x
   x = 2,848,203,026,244/1,118,916
6. Step 6: Final answer
   x = 2,545,502.10