Finding the Third Proportional to 613,424 and 931,172

Step by Step Solution

1. Step 1: Write the proportion equation
   613,424 : 931,172 = 931,172 : x
2. Step 2: Convert to fraction form
   613,424/931,172 = 931,172/x
3. Step 3: Cross multiply
   613,424x = 931,172 × 931,172
4. Step 4: Simplify right side
   613,424x = 867,081,293,584
5. Step 5: Solve for x
   x = 867,081,293,584/613,424
6. Step 6: Final answer
   x = 1,413,510.55