Finding the Third Proportional to 171,818 and 348,468

Step by Step Solution

1. Step 1: Write the proportion equation
   171,818 : 348,468 = 348,468 : x
2. Step 2: Convert to fraction form
   171,818/348,468 = 348,468/x
3. Step 3: Cross multiply
   171,818x = 348,468 × 348,468
4. Step 4: Simplify right side
   171,818x = 121,429,947,024
5. Step 5: Solve for x
   x = 121,429,947,024/171,818
6. Step 6: Final answer
   x = 706,735.89