Finding the Third Proportional to 69,958.69 and 78,706.69

Step by Step Solution

1. Step 1: Write the proportion equation
   69,958.69 : 78,706.69 = 78,706.69 : x
2. Step 2: Convert to fraction form
   69,958.69/78,706.69 = 78,706.69/x
3. Step 3: Cross multiply
   69,958.69x = 78,706.69 × 78,706.69
4. Step 4: Simplify right side
   69,958.69x = 6,194,742,657.22
5. Step 5: Solve for x
   x = 6,194,742,657.22/69,958.69
6. Step 6: Final answer
   x = 88,548.58