Finding the Third Proportional to 3,706,549 and 8,121,685

Step by Step Solution

1. Step 1: Write the proportion equation
   3,706,549 : 8,121,685 = 8,121,685 : x
2. Step 2: Convert to fraction form
   3,706,549/8,121,685 = 8,121,685/x
3. Step 3: Cross multiply
   3,706,549x = 8,121,685 × 8,121,685
4. Step 4: Simplify right side
   3,706,549x = 65,961,767,239,225
5. Step 5: Solve for x
   x = 65,961,767,239,225/3,706,549
6. Step 6: Final answer
   x = 17,796,005.73