Finding the Third Proportional to 815,040 and 1,791,428

Step by Step Solution

1. Step 1: Write the proportion equation
   815,040 : 1,791,428 = 1,791,428 : x
2. Step 2: Convert to fraction form
   815,040/1,791,428 = 1,791,428/x
3. Step 3: Cross multiply
   815,040x = 1,791,428 × 1,791,428
4. Step 4: Simplify right side
   815,040x = 3,209,214,279,184
5. Step 5: Solve for x
   x = 3,209,214,279,184/815,040
6. Step 6: Final answer
   x = 3,937,492.98