Finding the Third Proportional to 711,990 and 951,088.50

Step by Step Solution

1. Step 1: Write the proportion equation
   711,990 : 951,088.50 = 951,088.50 : x
2. Step 2: Convert to fraction form
   711,990/951,088.50 = 951,088.50/x
3. Step 3: Cross multiply
   711,990x = 951,088.50 × 951,088.50
4. Step 4: Simplify right side
   711,990x = 904,569,334,832.25
5. Step 5: Solve for x
   x = 904,569,334,832.25/711,990
6. Step 6: Final answer
   x = 1,270,480.39