Finding the Third Proportional to 145,870.13 and 301,864.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,870.13 : 301,864.50 = 301,864.50 : x
2. Step 2: Convert to fraction form
   145,870.13/301,864.50 = 301,864.50/x
3. Step 3: Cross multiply
   145,870.13x = 301,864.50 × 301,864.50
4. Step 4: Simplify right side
   145,870.13x = 91,122,176,360.25
5. Step 5: Solve for x
   x = 91,122,176,360.25/145,870.13
6. Step 6: Final answer
   x = 624,680.18