Finding the Third Proportional to 90,246 and 194,789

Step by Step Solution

1. Step 1: Write the proportion equation
   90,246 : 194,789 = 194,789 : x
2. Step 2: Convert to fraction form
   90,246/194,789 = 194,789/x
3. Step 3: Cross multiply
   90,246x = 194,789 × 194,789
4. Step 4: Simplify right side
   90,246x = 37,942,754,521
5. Step 5: Solve for x
   x = 37,942,754,521/90,246
6. Step 6: Final answer
   x = 420,436.97