Finding the Third Proportional to 789,726.50 and 1,154,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   789,726.50 : 1,154,971.50 = 1,154,971.50 : x
2. Step 2: Convert to fraction form
   789,726.50/1,154,971.50 = 1,154,971.50/x
3. Step 3: Cross multiply
   789,726.50x = 1,154,971.50 × 1,154,971.50
4. Step 4: Simplify right side
   789,726.50x = 1,333,959,165,812.25
5. Step 5: Solve for x
   x = 1,333,959,165,812.25/789,726.50
6. Step 6: Final answer
   x = 1,689,140.69