Finding the Third Proportional to 84,700 and 123,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   84,700 : 123,870.50 = 123,870.50 : x
2. Step 2: Convert to fraction form
   84,700/123,870.50 = 123,870.50/x
3. Step 3: Cross multiply
   84,700x = 123,870.50 × 123,870.50
4. Step 4: Simplify right side
   84,700x = 15,343,900,770.25
5. Step 5: Solve for x
   x = 15,343,900,770.25/84,700
6. Step 6: Final answer
   x = 181,155.85