Finding the Third Proportional to 63,085.50 and 139,293

Step by Step Solution

1. Step 1: Write the proportion equation
   63,085.50 : 139,293 = 139,293 : x
2. Step 2: Convert to fraction form
   63,085.50/139,293 = 139,293/x
3. Step 3: Cross multiply
   63,085.50x = 139,293 × 139,293
4. Step 4: Simplify right side
   63,085.50x = 19,402,539,849
5. Step 5: Solve for x
   x = 19,402,539,849/63,085.50
6. Step 6: Final answer
   x = 307,559.42