Finding the Third Proportional to 2,660,400 and 5,818,464

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660,400 : 5,818,464 = 5,818,464 : x
2. Step 2: Convert to fraction form
   2,660,400/5,818,464 = 5,818,464/x
3. Step 3: Cross multiply
   2,660,400x = 5,818,464 × 5,818,464
4. Step 4: Simplify right side
   2,660,400x = 33,854,523,319,296
5. Step 5: Solve for x
   x = 33,854,523,319,296/2,660,400
6. Step 6: Final answer
   x = 12,725,350.82