Finding the Third Proportional to 124,312 and 272,818.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,312 : 272,818.50 = 272,818.50 : x
2. Step 2: Convert to fraction form
   124,312/272,818.50 = 272,818.50/x
3. Step 3: Cross multiply
   124,312x = 272,818.50 × 272,818.50
4. Step 4: Simplify right side
   124,312x = 74,429,933,942.25
5. Step 5: Solve for x
   x = 74,429,933,942.25/124,312
6. Step 6: Final answer
   x = 598,734.91