Finding the Third Proportional to 907,402.50 and 1,392,826.50

Step by Step Solution

1. Step 1: Write the proportion equation
   907,402.50 : 1,392,826.50 = 1,392,826.50 : x
2. Step 2: Convert to fraction form
   907,402.50/1,392,826.50 = 1,392,826.50/x
3. Step 3: Cross multiply
   907,402.50x = 1,392,826.50 × 1,392,826.50
4. Step 4: Simplify right side
   907,402.50x = 1,939,965,659,102.25
5. Step 5: Solve for x
   x = 1,939,965,659,102.25/907,402.50
6. Step 6: Final answer
   x = 2,137,932.90