Finding the Third Proportional to 142,410 and 336,172

Step by Step Solution

1. Step 1: Write the proportion equation
   142,410 : 336,172 = 336,172 : x
2. Step 2: Convert to fraction form
   142,410/336,172 = 336,172/x
3. Step 3: Cross multiply
   142,410x = 336,172 × 336,172
4. Step 4: Simplify right side
   142,410x = 113,011,613,584
5. Step 5: Solve for x
   x = 113,011,613,584/142,410
6. Step 6: Final answer
   x = 793,565.15