Finding the Third Proportional to 64,810 and 139,736

Step by Step Solution

1. Step 1: Write the proportion equation
   64,810 : 139,736 = 139,736 : x
2. Step 2: Convert to fraction form
   64,810/139,736 = 139,736/x
3. Step 3: Cross multiply
   64,810x = 139,736 × 139,736
4. Step 4: Simplify right side
   64,810x = 19,526,149,696
5. Step 5: Solve for x
   x = 19,526,149,696/64,810
6. Step 6: Final answer
   x = 301,282.98