Finding the Third Proportional to 145,572 and 308,640.75

Step by Step Solution

1. Step 1: Write the proportion equation
   145,572 : 308,640.75 = 308,640.75 : x
2. Step 2: Convert to fraction form
   145,572/308,640.75 = 308,640.75/x
3. Step 3: Cross multiply
   145,572x = 308,640.75 × 308,640.75
4. Step 4: Simplify right side
   145,572x = 95,259,112,560.56
5. Step 5: Solve for x
   x = 95,259,112,560.56/145,572
6. Step 6: Final answer
   x = 654,377.99