Finding the Third Proportional to 58,386.75 and 78,454.13

Step by Step Solution

1. Step 1: Write the proportion equation
   58,386.75 : 78,454.13 = 78,454.13 : x
2. Step 2: Convert to fraction form
   58,386.75/78,454.13 = 78,454.13/x
3. Step 3: Cross multiply
   58,386.75x = 78,454.13 × 78,454.13
4. Step 4: Simplify right side
   58,386.75x = 6,155,049,729.52
5. Step 5: Solve for x
   x = 6,155,049,729.52/58,386.75
6. Step 6: Final answer
   x = 105,418.60