Finding the Third Proportional to 84,078 and 140,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   84,078 : 140,131.50 = 140,131.50 : x
2. Step 2: Convert to fraction form
   84,078/140,131.50 = 140,131.50/x
3. Step 3: Cross multiply
   84,078x = 140,131.50 × 140,131.50
4. Step 4: Simplify right side
   84,078x = 19,636,837,292.25
5. Step 5: Solve for x
   x = 19,636,837,292.25/84,078
6. Step 6: Final answer
   x = 233,555.00