Finding the Third Proportional to 3,666,457 and 5,387,312

Step by Step Solution

1. Step 1: Write the proportion equation
   3,666,457 : 5,387,312 = 5,387,312 : x
2. Step 2: Convert to fraction form
   3,666,457/5,387,312 = 5,387,312/x
3. Step 3: Cross multiply
   3,666,457x = 5,387,312 × 5,387,312
4. Step 4: Simplify right side
   3,666,457x = 29,023,130,585,344
5. Step 5: Solve for x
   x = 29,023,130,585,344/3,666,457
6. Step 6: Final answer
   x = 7,915,851.89