Finding the Third Proportional to 30,830.63 and 66,035.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,830.63 : 66,035.25 = 66,035.25 : x
2. Step 2: Convert to fraction form
   30,830.63/66,035.25 = 66,035.25/x
3. Step 3: Cross multiply
   30,830.63x = 66,035.25 × 66,035.25
4. Step 4: Simplify right side
   30,830.63x = 4,360,654,242.56
5. Step 5: Solve for x
   x = 4,360,654,242.56/30,830.63
6. Step 6: Final answer
   x = 141,439.05