Finding the Third Proportional to 8,652,821 and 13,208,061

Step by Step Solution

1. Step 1: Write the proportion equation
   8,652,821 : 13,208,061 = 13,208,061 : x
2. Step 2: Convert to fraction form
   8,652,821/13,208,061 = 13,208,061/x
3. Step 3: Cross multiply
   8,652,821x = 13,208,061 × 13,208,061
4. Step 4: Simplify right side
   8,652,821x = 174,452,875,379,721
5. Step 5: Solve for x
   x = 174,452,875,379,721/8,652,821
6. Step 6: Final answer
   x = 20,161,387.30