Finding the Third Proportional to 65,470 and 100,690

Step by Step Solution

1. Step 1: Write the proportion equation
   65,470 : 100,690 = 100,690 : x
2. Step 2: Convert to fraction form
   65,470/100,690 = 100,690/x
3. Step 3: Cross multiply
   65,470x = 100,690 × 100,690
4. Step 4: Simplify right side
   65,470x = 10,138,476,100
5. Step 5: Solve for x
   x = 10,138,476,100/65,470
6. Step 6: Final answer
   x = 154,856.82