Finding the Third Proportional to 62,916 and 139,818

Step by Step Solution

1. Step 1: Write the proportion equation
   62,916 : 139,818 = 139,818 : x
2. Step 2: Convert to fraction form
   62,916/139,818 = 139,818/x
3. Step 3: Cross multiply
   62,916x = 139,818 × 139,818
4. Step 4: Simplify right side
   62,916x = 19,549,073,124
5. Step 5: Solve for x
   x = 19,549,073,124/62,916
6. Step 6: Final answer
   x = 310,717.04