Finding the Third Proportional to 155,263.50 and 316,233

Step by Step Solution

1. Step 1: Write the proportion equation
   155,263.50 : 316,233 = 316,233 : x
2. Step 2: Convert to fraction form
   155,263.50/316,233 = 316,233/x
3. Step 3: Cross multiply
   155,263.50x = 316,233 × 316,233
4. Step 4: Simplify right side
   155,263.50x = 100,003,310,289
5. Step 5: Solve for x
   x = 100,003,310,289/155,263.50
6. Step 6: Final answer
   x = 644,087.70