Finding the Third Proportional to 840,235 and 1,291,501

Step by Step Solution

1. Step 1: Write the proportion equation
   840,235 : 1,291,501 = 1,291,501 : x
2. Step 2: Convert to fraction form
   840,235/1,291,501 = 1,291,501/x
3. Step 3: Cross multiply
   840,235x = 1,291,501 × 1,291,501
4. Step 4: Simplify right side
   840,235x = 1,667,974,833,001
5. Step 5: Solve for x
   x = 1,667,974,833,001/840,235
6. Step 6: Final answer
   x = 1,985,128.96