Finding the Third Proportional to 2,587,140 and 5,442,381

Step by Step Solution

1. Step 1: Write the proportion equation
   2,587,140 : 5,442,381 = 5,442,381 : x
2. Step 2: Convert to fraction form
   2,587,140/5,442,381 = 5,442,381/x
3. Step 3: Cross multiply
   2,587,140x = 5,442,381 × 5,442,381
4. Step 4: Simplify right side
   2,587,140x = 29,619,510,949,161
5. Step 5: Solve for x
   x = 29,619,510,949,161/2,587,140
6. Step 6: Final answer
   x = 11,448,746.86