Finding the Third Proportional to 37,148.63 and 72,436.78

Step by Step Solution

1. Step 1: Write the proportion equation
   37,148.63 : 72,436.78 = 72,436.78 : x
2. Step 2: Convert to fraction form
   37,148.63/72,436.78 = 72,436.78/x
3. Step 3: Cross multiply
   37,148.63x = 72,436.78 × 72,436.78
4. Step 4: Simplify right side
   37,148.63x = 5,247,087,277.86
5. Step 5: Solve for x
   x = 5,247,087,277.86/37,148.63
6. Step 6: Final answer
   x = 141,245.80