Finding the Third Proportional to 538,069.50 and 808,380

Step by Step Solution

1. Step 1: Write the proportion equation
   538,069.50 : 808,380 = 808,380 : x
2. Step 2: Convert to fraction form
   538,069.50/808,380 = 808,380/x
3. Step 3: Cross multiply
   538,069.50x = 808,380 × 808,380
4. Step 4: Simplify right side
   538,069.50x = 653,478,224,400
5. Step 5: Solve for x
   x = 653,478,224,400/538,069.50
6. Step 6: Final answer
   x = 1,214,486.65