Finding the Third Proportional to 62,758.13 and 87,778.69

Step by Step Solution

1. Step 1: Write the proportion equation
   62,758.13 : 87,778.69 = 87,778.69 : x
2. Step 2: Convert to fraction form
   62,758.13/87,778.69 = 87,778.69/x
3. Step 3: Cross multiply
   62,758.13x = 87,778.69 × 87,778.69
4. Step 4: Simplify right side
   62,758.13x = 7,705,097,979.22
5. Step 5: Solve for x
   x = 7,705,097,979.22/62,758.13
6. Step 6: Final answer
   x = 122,774.51