Finding the Third Proportional to 9,887,460 and 21,660,069

Step by Step Solution

1. Step 1: Write the proportion equation
   9,887,460 : 21,660,069 = 21,660,069 : x
2. Step 2: Convert to fraction form
   9,887,460/21,660,069 = 21,660,069/x
3. Step 3: Cross multiply
   9,887,460x = 21,660,069 × 21,660,069
4. Step 4: Simplify right side
   9,887,460x = 469,158,589,084,761
5. Step 5: Solve for x
   x = 469,158,589,084,761/9,887,460
6. Step 6: Final answer
   x = 47,449,859.63