Finding the Third Proportional to 5,672,412 and 8,512,830

Step by Step Solution

1. Step 1: Write the proportion equation
   5,672,412 : 8,512,830 = 8,512,830 : x
2. Step 2: Convert to fraction form
   5,672,412/8,512,830 = 8,512,830/x
3. Step 3: Cross multiply
   5,672,412x = 8,512,830 × 8,512,830
4. Step 4: Simplify right side
   5,672,412x = 72,468,274,608,900
5. Step 5: Solve for x
   x = 72,468,274,608,900/5,672,412
6. Step 6: Final answer
   x = 12,775,566.13