Finding the Third Proportional to 89,639 and 191,054

Step by Step Solution

1. Step 1: Write the proportion equation
   89,639 : 191,054 = 191,054 : x
2. Step 2: Convert to fraction form
   89,639/191,054 = 191,054/x
3. Step 3: Cross multiply
   89,639x = 191,054 × 191,054
4. Step 4: Simplify right side
   89,639x = 36,501,630,916
5. Step 5: Solve for x
   x = 36,501,630,916/89,639
6. Step 6: Final answer
   x = 407,207.03