Finding the Third Proportional to 4,878,470 and 7,142,745

Step by Step Solution

1. Step 1: Write the proportion equation
   4,878,470 : 7,142,745 = 7,142,745 : x
2. Step 2: Convert to fraction form
   4,878,470/7,142,745 = 7,142,745/x
3. Step 3: Cross multiply
   4,878,470x = 7,142,745 × 7,142,745
4. Step 4: Simplify right side
   4,878,470x = 51,018,806,135,025
5. Step 5: Solve for x
   x = 51,018,806,135,025/4,878,470
6. Step 6: Final answer
   x = 10,457,952.21