Finding the Third Proportional to 1,099,398 and 1,681,792.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099,398 : 1,681,792.50 = 1,681,792.50 : x
2. Step 2: Convert to fraction form
   1,099,398/1,681,792.50 = 1,681,792.50/x
3. Step 3: Cross multiply
   1,099,398x = 1,681,792.50 × 1,681,792.50
4. Step 4: Simplify right side
   1,099,398x = 2,828,426,013,056.25
5. Step 5: Solve for x
   x = 2,828,426,013,056.25/1,099,398
6. Step 6: Final answer
   x = 2,572,704.35