Finding the Third Proportional to 86,552 and 191,890

Step by Step Solution

1. Step 1: Write the proportion equation
   86,552 : 191,890 = 191,890 : x
2. Step 2: Convert to fraction form
   86,552/191,890 = 191,890/x
3. Step 3: Cross multiply
   86,552x = 191,890 × 191,890
4. Step 4: Simplify right side
   86,552x = 36,821,772,100
5. Step 5: Solve for x
   x = 36,821,772,100/86,552
6. Step 6: Final answer
   x = 425,429.48