Finding the Third Proportional to 4,074,386 and 8,634,466

Step by Step Solution

1. Step 1: Write the proportion equation
   4,074,386 : 8,634,466 = 8,634,466 : x
2. Step 2: Convert to fraction form
   4,074,386/8,634,466 = 8,634,466/x
3. Step 3: Cross multiply
   4,074,386x = 8,634,466 × 8,634,466
4. Step 4: Simplify right side
   4,074,386x = 74,554,003,105,156
5. Step 5: Solve for x
   x = 74,554,003,105,156/4,074,386
6. Step 6: Final answer
   x = 18,298,217.97