Finding the Third Proportional to 12,151,728 and 28,685,312

Step by Step Solution

1. Step 1: Write the proportion equation
   12,151,728 : 28,685,312 = 28,685,312 : x
2. Step 2: Convert to fraction form
   12,151,728/28,685,312 = 28,685,312/x
3. Step 3: Cross multiply
   12,151,728x = 28,685,312 × 28,685,312
4. Step 4: Simplify right side
   12,151,728x = 822,847,124,537,344
5. Step 5: Solve for x
   x = 822,847,124,537,344/12,151,728
6. Step 6: Final answer
   x = 67,714,412.68