Finding the Third Proportional to 50,476.50 and 78,381

Step by Step Solution

1. Step 1: Write the proportion equation
   50,476.50 : 78,381 = 78,381 : x
2. Step 2: Convert to fraction form
   50,476.50/78,381 = 78,381/x
3. Step 3: Cross multiply
   50,476.50x = 78,381 × 78,381
4. Step 4: Simplify right side
   50,476.50x = 6,143,581,161
5. Step 5: Solve for x
   x = 6,143,581,161/50,476.50
6. Step 6: Final answer
   x = 121,711.71