Finding the Third Proportional to 812,928 and 1,869,696

Step by Step Solution

1. Step 1: Write the proportion equation
   812,928 : 1,869,696 = 1,869,696 : x
2. Step 2: Convert to fraction form
   812,928/1,869,696 = 1,869,696/x
3. Step 3: Cross multiply
   812,928x = 1,869,696 × 1,869,696
4. Step 4: Simplify right side
   812,928x = 3,495,763,132,416
5. Step 5: Solve for x
   x = 3,495,763,132,416/812,928
6. Step 6: Final answer
   x = 4,300,212.48