Finding the Third Proportional to 70,499.81 and 146,809.69

Step by Step Solution

1. Step 1: Write the proportion equation
   70,499.81 : 146,809.69 = 146,809.69 : x
2. Step 2: Convert to fraction form
   70,499.81/146,809.69 = 146,809.69/x
3. Step 3: Cross multiply
   70,499.81x = 146,809.69 × 146,809.69
4. Step 4: Simplify right side
   70,499.81x = 21,553,084,343.85
5. Step 5: Solve for x
   x = 21,553,084,343.85/70,499.81
6. Step 6: Final answer
   x = 305,718.32