Finding the Third Proportional to 200,913 and 272,866.50

Step by Step Solution

1. Step 1: Write the proportion equation
   200,913 : 272,866.50 = 272,866.50 : x
2. Step 2: Convert to fraction form
   200,913/272,866.50 = 272,866.50/x
3. Step 3: Cross multiply
   200,913x = 272,866.50 × 272,866.50
4. Step 4: Simplify right side
   200,913x = 74,456,126,822.25
5. Step 5: Solve for x
   x = 74,456,126,822.25/200,913
6. Step 6: Final answer
   x = 370,588.90