Finding the Third Proportional to 145,233 and 318,461.63

Step by Step Solution

1. Step 1: Write the proportion equation
   145,233 : 318,461.63 = 318,461.63 : x
2. Step 2: Convert to fraction form
   145,233/318,461.63 = 318,461.63/x
3. Step 3: Cross multiply
   145,233x = 318,461.63 × 318,461.63
4. Step 4: Simplify right side
   145,233x = 101,417,806,597.64
5. Step 5: Solve for x
   x = 101,417,806,597.64/145,233
6. Step 6: Final answer
   x = 698,311.04