Finding the Third Proportional to 3,672,567 and 8,638,461

Step by Step Solution

1. Step 1: Write the proportion equation
   3,672,567 : 8,638,461 = 8,638,461 : x
2. Step 2: Convert to fraction form
   3,672,567/8,638,461 = 8,638,461/x
3. Step 3: Cross multiply
   3,672,567x = 8,638,461 × 8,638,461
4. Step 4: Simplify right side
   3,672,567x = 74,623,008,448,521
5. Step 5: Solve for x
   x = 74,623,008,448,521/3,672,567
6. Step 6: Final answer
   x = 20,319,032.56