Finding the Third Proportional to 1,928,634 and 4,200,138

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928,634 : 4,200,138 = 4,200,138 : x
2. Step 2: Convert to fraction form
   1,928,634/4,200,138 = 4,200,138/x
3. Step 3: Cross multiply
   1,928,634x = 4,200,138 × 4,200,138
4. Step 4: Simplify right side
   1,928,634x = 17,641,159,219,044
5. Step 5: Solve for x
   x = 17,641,159,219,044/1,928,634
6. Step 6: Final answer
   x = 9,146,970.97