Finding the Third Proportional to 4,321,428 and 9,283,368

Step by Step Solution

1. Step 1: Write the proportion equation
   4,321,428 : 9,283,368 = 9,283,368 : x
2. Step 2: Convert to fraction form
   4,321,428/9,283,368 = 9,283,368/x
3. Step 3: Cross multiply
   4,321,428x = 9,283,368 × 9,283,368
4. Step 4: Simplify right side
   4,321,428x = 86,180,921,423,424
5. Step 5: Solve for x
   x = 86,180,921,423,424/4,321,428
6. Step 6: Final answer
   x = 19,942,695.20