Finding the Third Proportional to 99,011 and 131,290

Step by Step Solution

1. Step 1: Write the proportion equation
   99,011 : 131,290 = 131,290 : x
2. Step 2: Convert to fraction form
   99,011/131,290 = 131,290/x
3. Step 3: Cross multiply
   99,011x = 131,290 × 131,290
4. Step 4: Simplify right side
   99,011x = 17,237,064,100
5. Step 5: Solve for x
   x = 17,237,064,100/99,011
6. Step 6: Final answer
   x = 174,092.41