Finding the Third Proportional to 619,303.50 and 872,091

Step by Step Solution

1. Step 1: Write the proportion equation
   619,303.50 : 872,091 = 872,091 : x
2. Step 2: Convert to fraction form
   619,303.50/872,091 = 872,091/x
3. Step 3: Cross multiply
   619,303.50x = 872,091 × 872,091
4. Step 4: Simplify right side
   619,303.50x = 760,542,712,281
5. Step 5: Solve for x
   x = 760,542,712,281/619,303.50
6. Step 6: Final answer
   x = 1,228,061.38