Finding the Third Proportional to 9,988,563 and 21,493,080

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988,563 : 21,493,080 = 21,493,080 : x
2. Step 2: Convert to fraction form
   9,988,563/21,493,080 = 21,493,080/x
3. Step 3: Cross multiply
   9,988,563x = 21,493,080 × 21,493,080
4. Step 4: Simplify right side
   9,988,563x = 461,952,487,886,400
5. Step 5: Solve for x
   x = 461,952,487,886,400/9,988,563
6. Step 6: Final answer
   x = 46,248,142.79