Finding the Third Proportional to 355,716 and 546,694.50

Step by Step Solution

1. Step 1: Write the proportion equation
   355,716 : 546,694.50 = 546,694.50 : x
2. Step 2: Convert to fraction form
   355,716/546,694.50 = 546,694.50/x
3. Step 3: Cross multiply
   355,716x = 546,694.50 × 546,694.50
4. Step 4: Simplify right side
   355,716x = 298,874,876,330.25
5. Step 5: Solve for x
   x = 298,874,876,330.25/355,716
6. Step 6: Final answer
   x = 840,206.45