Finding the Third Proportional to 58,672.69 and 78,666.19

Step by Step Solution

1. Step 1: Write the proportion equation
   58,672.69 : 78,666.19 = 78,666.19 : x
2. Step 2: Convert to fraction form
   58,672.69/78,666.19 = 78,666.19/x
3. Step 3: Cross multiply
   58,672.69x = 78,666.19 × 78,666.19
4. Step 4: Simplify right side
   58,672.69x = 6,188,369,055.79
5. Step 5: Solve for x
   x = 6,188,369,055.79/58,672.69
6. Step 6: Final answer
   x = 105,472.74