Finding the Third Proportional to 58,137.75 and 78,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,137.75 : 78,448.50 = 78,448.50 : x
2. Step 2: Convert to fraction form
   58,137.75/78,448.50 = 78,448.50/x
3. Step 3: Cross multiply
   58,137.75x = 78,448.50 × 78,448.50
4. Step 4: Simplify right side
   58,137.75x = 6,154,167,152.25
5. Step 5: Solve for x
   x = 6,154,167,152.25/58,137.75
6. Step 6: Final answer
   x = 105,854.92