Finding the Third Proportional to 428,970 and 914,938.50

Step by Step Solution

1. Step 1: Write the proportion equation
   428,970 : 914,938.50 = 914,938.50 : x
2. Step 2: Convert to fraction form
   428,970/914,938.50 = 914,938.50/x
3. Step 3: Cross multiply
   428,970x = 914,938.50 × 914,938.50
4. Step 4: Simplify right side
   428,970x = 837,112,458,782.25
5. Step 5: Solve for x
   x = 837,112,458,782.25/428,970
6. Step 6: Final answer
   x = 1,951,447.56