Finding the Third Proportional to 4,728,312 and 7,488,315

Step by Step Solution

1. Step 1: Write the proportion equation
   4,728,312 : 7,488,315 = 7,488,315 : x
2. Step 2: Convert to fraction form
   4,728,312/7,488,315 = 7,488,315/x
3. Step 3: Cross multiply
   4,728,312x = 7,488,315 × 7,488,315
4. Step 4: Simplify right side
   4,728,312x = 56,074,861,539,225
5. Step 5: Solve for x
   x = 56,074,861,539,225/4,728,312
6. Step 6: Final answer
   x = 11,859,382.70