Finding the Third Proportional to 3,978,112 and 6,118,188

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978,112 : 6,118,188 = 6,118,188 : x
2. Step 2: Convert to fraction form
   3,978,112/6,118,188 = 6,118,188/x
3. Step 3: Cross multiply
   3,978,112x = 6,118,188 × 6,118,188
4. Step 4: Simplify right side
   3,978,112x = 37,432,224,403,344
5. Step 5: Solve for x
   x = 37,432,224,403,344/3,978,112
6. Step 6: Final answer
   x = 9,409,545.13