Finding the Third Proportional to 87,621 and 191,460

Step by Step Solution

1. Step 1: Write the proportion equation
   87,621 : 191,460 = 191,460 : x
2. Step 2: Convert to fraction form
   87,621/191,460 = 191,460/x
3. Step 3: Cross multiply
   87,621x = 191,460 × 191,460
4. Step 4: Simplify right side
   87,621x = 36,656,931,600
5. Step 5: Solve for x
   x = 36,656,931,600/87,621
6. Step 6: Final answer
   x = 418,357.83