Finding the Third Proportional to 90,457 and 197,003

Step by Step Solution

1. Step 1: Write the proportion equation
   90,457 : 197,003 = 197,003 : x
2. Step 2: Convert to fraction form
   90,457/197,003 = 197,003/x
3. Step 3: Cross multiply
   90,457x = 197,003 × 197,003
4. Step 4: Simplify right side
   90,457x = 38,810,182,009
5. Step 5: Solve for x
   x = 38,810,182,009/90,457
6. Step 6: Final answer
   x = 429,045.65