Finding the Third Proportional to 152,811 and 336,210

Step by Step Solution

1. Step 1: Write the proportion equation
   152,811 : 336,210 = 336,210 : x
2. Step 2: Convert to fraction form
   152,811/336,210 = 336,210/x
3. Step 3: Cross multiply
   152,811x = 336,210 × 336,210
4. Step 4: Simplify right side
   152,811x = 113,037,164,100
5. Step 5: Solve for x
   x = 113,037,164,100/152,811
6. Step 6: Final answer
   x = 739,718.76