Finding the Third Proportional to 245,613 and 369,331.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,613 : 369,331.50 = 369,331.50 : x
2. Step 2: Convert to fraction form
   245,613/369,331.50 = 369,331.50/x
3. Step 3: Cross multiply
   245,613x = 369,331.50 × 369,331.50
4. Step 4: Simplify right side
   245,613x = 136,405,756,892.25
5. Step 5: Solve for x
   x = 136,405,756,892.25/245,613
6. Step 6: Final answer
   x = 555,368.64