Finding the Third Proportional to 133,913 and 207,259.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,913 : 207,259.50 = 207,259.50 : x
2. Step 2: Convert to fraction form
   133,913/207,259.50 = 207,259.50/x
3. Step 3: Cross multiply
   133,913x = 207,259.50 × 207,259.50
4. Step 4: Simplify right side
   133,913x = 42,956,500,340.25
5. Step 5: Solve for x
   x = 42,956,500,340.25/133,913
6. Step 6: Final answer
   x = 320,779.17