Finding the Third Proportional to 40,075.50 and 86,506.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,075.50 : 86,506.50 = 86,506.50 : x
2. Step 2: Convert to fraction form
   40,075.50/86,506.50 = 86,506.50/x
3. Step 3: Cross multiply
   40,075.50x = 86,506.50 × 86,506.50
4. Step 4: Simplify right side
   40,075.50x = 7,483,374,542.25
5. Step 5: Solve for x
   x = 7,483,374,542.25/40,075.50
6. Step 6: Final answer
   x = 186,731.91