Finding the Third Proportional to 64,812 and 141,816

Step by Step Solution

1. Step 1: Write the proportion equation
   64,812 : 141,816 = 141,816 : x
2. Step 2: Convert to fraction form
   64,812/141,816 = 141,816/x
3. Step 3: Cross multiply
   64,812x = 141,816 × 141,816
4. Step 4: Simplify right side
   64,812x = 20,111,777,856
5. Step 5: Solve for x
   x = 20,111,777,856/64,812
6. Step 6: Final answer
   x = 310,309.48