Finding the Third Proportional to 66,566.81 and 146,061.98

Step by Step Solution

1. Step 1: Write the proportion equation
   66,566.81 : 146,061.98 = 146,061.98 : x
2. Step 2: Convert to fraction form
   66,566.81/146,061.98 = 146,061.98/x
3. Step 3: Cross multiply
   66,566.81x = 146,061.98 × 146,061.98
4. Step 4: Simplify right side
   66,566.81x = 21,334,103,279.56
5. Step 5: Solve for x
   x = 21,334,103,279.56/66,566.81
6. Step 6: Final answer
   x = 320,491.59