Finding the Third Proportional to 131,692 and 291,856

Step by Step Solution

1. Step 1: Write the proportion equation
   131,692 : 291,856 = 291,856 : x
2. Step 2: Convert to fraction form
   131,692/291,856 = 291,856/x
3. Step 3: Cross multiply
   131,692x = 291,856 × 291,856
4. Step 4: Simplify right side
   131,692x = 85,179,924,736
5. Step 5: Solve for x
   x = 85,179,924,736/131,692
6. Step 6: Final answer
   x = 646,811.69