Finding the Third Proportional to 89,987.63 and 196,924.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,987.63 : 196,924.50 = 196,924.50 : x
2. Step 2: Convert to fraction form
   89,987.63/196,924.50 = 196,924.50/x
3. Step 3: Cross multiply
   89,987.63x = 196,924.50 × 196,924.50
4. Step 4: Simplify right side
   89,987.63x = 38,779,258,700.25
5. Step 5: Solve for x
   x = 38,779,258,700.25/89,987.63
6. Step 6: Final answer
   x = 430,939.91