Finding the Third Proportional to 13,909,078 and 21,276,686

Step by Step Solution

1. Step 1: Write the proportion equation
   13,909,078 : 21,276,686 = 21,276,686 : x
2. Step 2: Convert to fraction form
   13,909,078/21,276,686 = 21,276,686/x
3. Step 3: Cross multiply
   13,909,078x = 21,276,686 × 21,276,686
4. Step 4: Simplify right side
   13,909,078x = 452,697,367,142,596
5. Step 5: Solve for x
   x = 452,697,367,142,596/13,909,078
6. Step 6: Final answer
   x = 32,546,899.74