Finding the Third Proportional to 300,061.50 and 650,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   300,061.50 : 650,971.50 = 650,971.50 : x
2. Step 2: Convert to fraction form
   300,061.50/650,971.50 = 650,971.50/x
3. Step 3: Cross multiply
   300,061.50x = 650,971.50 × 650,971.50
4. Step 4: Simplify right side
   300,061.50x = 423,763,893,812.25
5. Step 5: Solve for x
   x = 423,763,893,812.25/300,061.50
6. Step 6: Final answer
   x = 1,412,256.80