Finding the Third Proportional to 133,456.50 and 290,145

Step by Step Solution

1. Step 1: Write the proportion equation
   133,456.50 : 290,145 = 290,145 : x
2. Step 2: Convert to fraction form
   133,456.50/290,145 = 290,145/x
3. Step 3: Cross multiply
   133,456.50x = 290,145 × 290,145
4. Step 4: Simplify right side
   133,456.50x = 84,184,121,025
5. Step 5: Solve for x
   x = 84,184,121,025/133,456.50
6. Step 6: Final answer
   x = 630,798.21