Finding the Third Proportional to 433,192 and 646,196

Step by Step Solution

1. Step 1: Write the proportion equation
   433,192 : 646,196 = 646,196 : x
2. Step 2: Convert to fraction form
   433,192/646,196 = 646,196/x
3. Step 3: Cross multiply
   433,192x = 646,196 × 646,196
4. Step 4: Simplify right side
   433,192x = 417,569,270,416
5. Step 5: Solve for x
   x = 417,569,270,416/433,192
6. Step 6: Final answer
   x = 963,935.78