Finding the Third Proportional to 133,336.50 and 290,640

Step by Step Solution

1. Step 1: Write the proportion equation
   133,336.50 : 290,640 = 290,640 : x
2. Step 2: Convert to fraction form
   133,336.50/290,640 = 290,640/x
3. Step 3: Cross multiply
   133,336.50x = 290,640 × 290,640
4. Step 4: Simplify right side
   133,336.50x = 84,471,609,600
5. Step 5: Solve for x
   x = 84,471,609,600/133,336.50
6. Step 6: Final answer
   x = 633,522.03