Finding the Third Proportional to 38,215.50 and 78,131.63

Step by Step Solution

1. Step 1: Write the proportion equation
   38,215.50 : 78,131.63 = 78,131.63 : x
2. Step 2: Convert to fraction form
   38,215.50/78,131.63 = 78,131.63/x
3. Step 3: Cross multiply
   38,215.50x = 78,131.63 × 78,131.63
4. Step 4: Simplify right side
   38,215.50x = 6,104,550,825.14
5. Step 5: Solve for x
   x = 6,104,550,825.14/38,215.50
6. Step 6: Final answer
   x = 159,740.18