Finding the Third Proportional to 421,442 and 931,516

Step by Step Solution

1. Step 1: Write the proportion equation
   421,442 : 931,516 = 931,516 : x
2. Step 2: Convert to fraction form
   421,442/931,516 = 931,516/x
3. Step 3: Cross multiply
   421,442x = 931,516 × 931,516
4. Step 4: Simplify right side
   421,442x = 867,722,058,256
5. Step 5: Solve for x
   x = 867,722,058,256/421,442
6. Step 6: Final answer
   x = 2,058,935.89