Finding the Third Proportional to 59,130 and 86,970

Step by Step Solution

1. Step 1: Write the proportion equation
   59,130 : 86,970 = 86,970 : x
2. Step 2: Convert to fraction form
   59,130/86,970 = 86,970/x
3. Step 3: Cross multiply
   59,130x = 86,970 × 86,970
4. Step 4: Simplify right side
   59,130x = 7,563,780,900
5. Step 5: Solve for x
   x = 7,563,780,900/59,130
6. Step 6: Final answer
   x = 127,917.82