Finding the Third Proportional to 133,617 and 214,906.50

Step by Step Solution

1. Step 1: Write the proportion equation
   133,617 : 214,906.50 = 214,906.50 : x
2. Step 2: Convert to fraction form
   133,617/214,906.50 = 214,906.50/x
3. Step 3: Cross multiply
   133,617x = 214,906.50 × 214,906.50
4. Step 4: Simplify right side
   133,617x = 46,184,803,742.25
5. Step 5: Solve for x
   x = 46,184,803,742.25/133,617
6. Step 6: Final answer
   x = 345,650.66