Finding the Third Proportional to 64,850 and 143,308

Step by Step Solution

1. Step 1: Write the proportion equation
   64,850 : 143,308 = 143,308 : x
2. Step 2: Convert to fraction form
   64,850/143,308 = 143,308/x
3. Step 3: Cross multiply
   64,850x = 143,308 × 143,308
4. Step 4: Simplify right side
   64,850x = 20,537,182,864
5. Step 5: Solve for x
   x = 20,537,182,864/64,850
6. Step 6: Final answer
   x = 316,687.48