Finding the Third Proportional to 284,220 and 607,820.63

Step by Step Solution

1. Step 1: Write the proportion equation
   284,220 : 607,820.63 = 607,820.63 : x
2. Step 2: Convert to fraction form
   284,220/607,820.63 = 607,820.63/x
3. Step 3: Cross multiply
   284,220x = 607,820.63 × 607,820.63
4. Step 4: Simplify right side
   284,220x = 369,445,912,175.39
5. Step 5: Solve for x
   x = 369,445,912,175.39/284,220
6. Step 6: Final answer
   x = 1,299,858.95