Finding the Third Proportional to 90,273 and 190,428

Step by Step Solution

1. Step 1: Write the proportion equation
   90,273 : 190,428 = 190,428 : x
2. Step 2: Convert to fraction form
   90,273/190,428 = 190,428/x
3. Step 3: Cross multiply
   90,273x = 190,428 × 190,428
4. Step 4: Simplify right side
   90,273x = 36,262,823,184
5. Step 5: Solve for x
   x = 36,262,823,184/90,273
6. Step 6: Final answer
   x = 401,701.76