Finding the Third Proportional to 42,528 and 87,810

Step by Step Solution

1. Step 1: Write the proportion equation
   42,528 : 87,810 = 87,810 : x
2. Step 2: Convert to fraction form
   42,528/87,810 = 87,810/x
3. Step 3: Cross multiply
   42,528x = 87,810 × 87,810
4. Step 4: Simplify right side
   42,528x = 7,710,596,100
5. Step 5: Solve for x
   x = 7,710,596,100/42,528
6. Step 6: Final answer
   x = 181,306.34