Finding the Third Proportional to 4,078,730 and 8,577,364

Step by Step Solution

1. Step 1: Write the proportion equation
   4,078,730 : 8,577,364 = 8,577,364 : x
2. Step 2: Convert to fraction form
   4,078,730/8,577,364 = 8,577,364/x
3. Step 3: Cross multiply
   4,078,730x = 8,577,364 × 8,577,364
4. Step 4: Simplify right side
   4,078,730x = 73,571,173,188,496
5. Step 5: Solve for x
   x = 73,571,173,188,496/4,078,730
6. Step 6: Final answer
   x = 18,037,764.99