Finding the Third Proportional to 1,905,210 and 4,072,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,905,210 : 4,072,440 = 4,072,440 : x
2. Step 2: Convert to fraction form
   1,905,210/4,072,440 = 4,072,440/x
3. Step 3: Cross multiply
   1,905,210x = 4,072,440 × 4,072,440
4. Step 4: Simplify right side
   1,905,210x = 16,584,767,553,600
5. Step 5: Solve for x
   x = 16,584,767,553,600/1,905,210
6. Step 6: Final answer
   x = 8,704,955.12