Finding the Third Proportional to 64,820 and 141,673

Step by Step Solution

1. Step 1: Write the proportion equation
   64,820 : 141,673 = 141,673 : x
2. Step 2: Convert to fraction form
   64,820/141,673 = 141,673/x
3. Step 3: Cross multiply
   64,820x = 141,673 × 141,673
4. Step 4: Simplify right side
   64,820x = 20,071,238,929
5. Step 5: Solve for x
   x = 20,071,238,929/64,820
6. Step 6: Final answer
   x = 309,645.77