Finding the Third Proportional to 723,820 and 1,590,402.50

Step by Step Solution

1. Step 1: Write the proportion equation
   723,820 : 1,590,402.50 = 1,590,402.50 : x
2. Step 2: Convert to fraction form
   723,820/1,590,402.50 = 1,590,402.50/x
3. Step 3: Cross multiply
   723,820x = 1,590,402.50 × 1,590,402.50
4. Step 4: Simplify right side
   723,820x = 2,529,380,112,006.25
5. Step 5: Solve for x
   x = 2,529,380,112,006.25/723,820
6. Step 6: Final answer
   x = 3,494,487.73