Finding the Third Proportional to 130,610 and 290,404

Step by Step Solution

1. Step 1: Write the proportion equation
   130,610 : 290,404 = 290,404 : x
2. Step 2: Convert to fraction form
   130,610/290,404 = 290,404/x
3. Step 3: Cross multiply
   130,610x = 290,404 × 290,404
4. Step 4: Simplify right side
   130,610x = 84,334,483,216
5. Step 5: Solve for x
   x = 84,334,483,216/130,610
6. Step 6: Final answer
   x = 645,696.99