Finding the Third Proportional to 9,988,520 and 21,492,996

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988,520 : 21,492,996 = 21,492,996 : x
2. Step 2: Convert to fraction form
   9,988,520/21,492,996 = 21,492,996/x
3. Step 3: Cross multiply
   9,988,520x = 21,492,996 × 21,492,996
4. Step 4: Simplify right side
   9,988,520x = 461,948,877,056,016
5. Step 5: Solve for x
   x = 461,948,877,056,016/9,988,520
6. Step 6: Final answer
   x = 46,247,980.39