Finding the Third Proportional to 619,453.50 and 1,272,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   619,453.50 : 1,272,256.50 = 1,272,256.50 : x
2. Step 2: Convert to fraction form
   619,453.50/1,272,256.50 = 1,272,256.50/x
3. Step 3: Cross multiply
   619,453.50x = 1,272,256.50 × 1,272,256.50
4. Step 4: Simplify right side
   619,453.50x = 1,618,636,601,792.25
5. Step 5: Solve for x
   x = 1,618,636,601,792.25/619,453.50
6. Step 6: Final answer
   x = 2,613,007.44