Finding the Third Proportional to 69,210 and 90,875.25

Step by Step Solution

1. Step 1: Write the proportion equation
   69,210 : 90,875.25 = 90,875.25 : x
2. Step 2: Convert to fraction form
   69,210/90,875.25 = 90,875.25/x
3. Step 3: Cross multiply
   69,210x = 90,875.25 × 90,875.25
4. Step 4: Simplify right side
   69,210x = 8,258,311,062.56
5. Step 5: Solve for x
   x = 8,258,311,062.56/69,210
6. Step 6: Final answer
   x = 119,322.51