Finding the Third Proportional to 69,795 and 99,690

Step by Step Solution

1. Step 1: Write the proportion equation
   69,795 : 99,690 = 99,690 : x
2. Step 2: Convert to fraction form
   69,795/99,690 = 99,690/x
3. Step 3: Cross multiply
   69,795x = 99,690 × 99,690
4. Step 4: Simplify right side
   69,795x = 9,938,096,100
5. Step 5: Solve for x
   x = 9,938,096,100/69,795
6. Step 6: Final answer
   x = 142,389.80