Finding the Third Proportional to 3,689,965 and 8,106,374

Step by Step Solution

1. Step 1: Write the proportion equation
   3,689,965 : 8,106,374 = 8,106,374 : x
2. Step 2: Convert to fraction form
   3,689,965/8,106,374 = 8,106,374/x
3. Step 3: Cross multiply
   3,689,965x = 8,106,374 × 8,106,374
4. Step 4: Simplify right side
   3,689,965x = 65,713,299,427,876
5. Step 5: Solve for x
   x = 65,713,299,427,876/3,689,965
6. Step 6: Final answer
   x = 17,808,651.15