Finding the Third Proportional to 291,076 and 434,826

Step by Step Solution

1. Step 1: Write the proportion equation
   291,076 : 434,826 = 434,826 : x
2. Step 2: Convert to fraction form
   291,076/434,826 = 434,826/x
3. Step 3: Cross multiply
   291,076x = 434,826 × 434,826
4. Step 4: Simplify right side
   291,076x = 189,073,650,276
5. Step 5: Solve for x
   x = 189,073,650,276/291,076
6. Step 6: Final answer
   x = 649,567.98