Finding the Third Proportional to 12,352,988 and 17,820,813

Step by Step Solution

1. Step 1: Write the proportion equation
   12,352,988 : 17,820,813 = 17,820,813 : x
2. Step 2: Convert to fraction form
   12,352,988/17,820,813 = 17,820,813/x
3. Step 3: Cross multiply
   12,352,988x = 17,820,813 × 17,820,813
4. Step 4: Simplify right side
   12,352,988x = 317,581,375,980,969
5. Step 5: Solve for x
   x = 317,581,375,980,969/12,352,988
6. Step 6: Final answer
   x = 25,708,871.08