Finding the Third Proportional to 3,181,320 and 4,818,312

Step by Step Solution

1. Step 1: Write the proportion equation
   3,181,320 : 4,818,312 = 4,818,312 : x
2. Step 2: Convert to fraction form
   3,181,320/4,818,312 = 4,818,312/x
3. Step 3: Cross multiply
   3,181,320x = 4,818,312 × 4,818,312
4. Step 4: Simplify right side
   3,181,320x = 23,216,130,529,344
5. Step 5: Solve for x
   x = 23,216,130,529,344/3,181,320
6. Step 6: Final answer
   x = 7,297,640.77