Finding the Third Proportional to 55,670 and 86,210

Step by Step Solution

1. Step 1: Write the proportion equation
   55,670 : 86,210 = 86,210 : x
2. Step 2: Convert to fraction form
   55,670/86,210 = 86,210/x
3. Step 3: Cross multiply
   55,670x = 86,210 × 86,210
4. Step 4: Simplify right side
   55,670x = 7,432,164,100
5. Step 5: Solve for x
   x = 7,432,164,100/55,670
6. Step 6: Final answer
   x = 133,503.94