Finding the Third Proportional to 9,939,988 and 21,741,028

Step by Step Solution

1. Step 1: Write the proportion equation
   9,939,988 : 21,741,028 = 21,741,028 : x
2. Step 2: Convert to fraction form
   9,939,988/21,741,028 = 21,741,028/x
3. Step 3: Cross multiply
   9,939,988x = 21,741,028 × 21,741,028
4. Step 4: Simplify right side
   9,939,988x = 472,672,298,496,784
5. Step 5: Solve for x
   x = 472,672,298,496,784/9,939,988
6. Step 6: Final answer
   x = 47,552,602.53