Finding the Third Proportional to 72,312 and 155,736.75

Step by Step Solution

1. Step 1: Write the proportion equation
   72,312 : 155,736.75 = 155,736.75 : x
2. Step 2: Convert to fraction form
   72,312/155,736.75 = 155,736.75/x
3. Step 3: Cross multiply
   72,312x = 155,736.75 × 155,736.75
4. Step 4: Simplify right side
   72,312x = 24,253,935,300.56
5. Step 5: Solve for x
   x = 24,253,935,300.56/72,312
6. Step 6: Final answer
   x = 335,406.78