Finding the Third Proportional to 9,988,506 and 21,492,969

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988,506 : 21,492,969 = 21,492,969 : x
2. Step 2: Convert to fraction form
   9,988,506/21,492,969 = 21,492,969/x
3. Step 3: Cross multiply
   9,988,506x = 21,492,969 × 21,492,969
4. Step 4: Simplify right side
   9,988,506x = 461,947,716,434,961
5. Step 5: Solve for x
   x = 461,947,716,434,961/9,988,506
6. Step 6: Final answer
   x = 46,247,929.01