Finding the Third Proportional to 272,619 and 413,833.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,619 : 413,833.50 = 413,833.50 : x
2. Step 2: Convert to fraction form
   272,619/413,833.50 = 413,833.50/x
3. Step 3: Cross multiply
   272,619x = 413,833.50 × 413,833.50
4. Step 4: Simplify right side
   272,619x = 171,258,165,722.25
5. Step 5: Solve for x
   x = 171,258,165,722.25/272,619
6. Step 6: Final answer
   x = 628,196.00