Finding the Third Proportional to 145,008 and 319,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,008 : 319,411.50 = 319,411.50 : x
2. Step 2: Convert to fraction form
   145,008/319,411.50 = 319,411.50/x
3. Step 3: Cross multiply
   145,008x = 319,411.50 × 319,411.50
4. Step 4: Simplify right side
   145,008x = 102,023,706,332.25
5. Step 5: Solve for x
   x = 102,023,706,332.25/145,008
6. Step 6: Final answer
   x = 703,572.95