Finding the Third Proportional to 27,138.61 and 43,075.78

Step by Step Solution

1. Step 1: Write the proportion equation
   27,138.61 : 43,075.78 = 43,075.78 : x
2. Step 2: Convert to fraction form
   27,138.61/43,075.78 = 43,075.78/x
3. Step 3: Cross multiply
   27,138.61x = 43,075.78 × 43,075.78
4. Step 4: Simplify right side
   27,138.61x = 1,855,523,182.70
5. Step 5: Solve for x
   x = 1,855,523,182.70/27,138.61
6. Step 6: Final answer
   x = 68,372.08