Finding the Third Proportional to 11,818,566 and 25,402,662

Step by Step Solution

1. Step 1: Write the proportion equation
   11,818,566 : 25,402,662 = 25,402,662 : x
2. Step 2: Convert to fraction form
   11,818,566/25,402,662 = 25,402,662/x
3. Step 3: Cross multiply
   11,818,566x = 25,402,662 × 25,402,662
4. Step 4: Simplify right side
   11,818,566x = 645,295,236,686,244
5. Step 5: Solve for x
   x = 645,295,236,686,244/11,818,566
6. Step 6: Final answer
   x = 54,600,129.72