Finding the Third Proportional to 58,386.94 and 78,454.69

Step by Step Solution

1. Step 1: Write the proportion equation
   58,386.94 : 78,454.69 = 78,454.69 : x
2. Step 2: Convert to fraction form
   58,386.94/78,454.69 = 78,454.69/x
3. Step 3: Cross multiply
   58,386.94x = 78,454.69 × 78,454.69
4. Step 4: Simplify right side
   58,386.94x = 6,155,137,990.72
5. Step 5: Solve for x
   x = 6,155,137,990.72/58,386.94
6. Step 6: Final answer
   x = 105,419.78