Finding the Third Proportional to 30,906 and 63,281.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,906 : 63,281.25 = 63,281.25 : x
2. Step 2: Convert to fraction form
   30,906/63,281.25 = 63,281.25/x
3. Step 3: Cross multiply
   30,906x = 63,281.25 × 63,281.25
4. Step 4: Simplify right side
   30,906x = 4,004,516,601.56
5. Step 5: Solve for x
   x = 4,004,516,601.56/30,906
6. Step 6: Final answer
   x = 129,570.85