Finding the Third Proportional to 403,407 and 880,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   403,407 : 880,168.50 = 880,168.50 : x
2. Step 2: Convert to fraction form
   403,407/880,168.50 = 880,168.50/x
3. Step 3: Cross multiply
   403,407x = 880,168.50 × 880,168.50
4. Step 4: Simplify right side
   403,407x = 774,696,588,392.25
5. Step 5: Solve for x
   x = 774,696,588,392.25/403,407
6. Step 6: Final answer
   x = 1,920,384.60