Finding the Third Proportional to 402,492.50 and 838,056

Step by Step Solution

1. Step 1: Write the proportion equation
   402,492.50 : 838,056 = 838,056 : x
2. Step 2: Convert to fraction form
   402,492.50/838,056 = 838,056/x
3. Step 3: Cross multiply
   402,492.50x = 838,056 × 838,056
4. Step 4: Simplify right side
   402,492.50x = 702,337,859,136
5. Step 5: Solve for x
   x = 702,337,859,136/402,492.50
6. Step 6: Final answer
   x = 1,744,971.30