Finding the Third Proportional to 64,980 and 141,712

Step by Step Solution

1. Step 1: Write the proportion equation
   64,980 : 141,712 = 141,712 : x
2. Step 2: Convert to fraction form
   64,980/141,712 = 141,712/x
3. Step 3: Cross multiply
   64,980x = 141,712 × 141,712
4. Step 4: Simplify right side
   64,980x = 20,082,290,944
5. Step 5: Solve for x
   x = 20,082,290,944/64,980
6. Step 6: Final answer
   x = 309,053.42