Finding the Third Proportional to 90,722 and 199,156

Step by Step Solution

1. Step 1: Write the proportion equation
   90,722 : 199,156 = 199,156 : x
2. Step 2: Convert to fraction form
   90,722/199,156 = 199,156/x
3. Step 3: Cross multiply
   90,722x = 199,156 × 199,156
4. Step 4: Simplify right side
   90,722x = 39,663,112,336
5. Step 5: Solve for x
   x = 39,663,112,336/90,722
6. Step 6: Final answer
   x = 437,193.98