Finding the Third Proportional to 156,782 and 343,012

Step by Step Solution

1. Step 1: Write the proportion equation
   156,782 : 343,012 = 343,012 : x
2. Step 2: Convert to fraction form
   156,782/343,012 = 343,012/x
3. Step 3: Cross multiply
   156,782x = 343,012 × 343,012
4. Step 4: Simplify right side
   156,782x = 117,657,232,144
5. Step 5: Solve for x
   x = 117,657,232,144/156,782
6. Step 6: Final answer
   x = 750,451.15