Finding the Third Proportional to 84,699 and 123,865.50

Step by Step Solution

1. Step 1: Write the proportion equation
   84,699 : 123,865.50 = 123,865.50 : x
2. Step 2: Convert to fraction form
   84,699/123,865.50 = 123,865.50/x
3. Step 3: Cross multiply
   84,699x = 123,865.50 × 123,865.50
4. Step 4: Simplify right side
   84,699x = 15,342,662,090.25
5. Step 5: Solve for x
   x = 15,342,662,090.25/84,699
6. Step 6: Final answer
   x = 181,143.37