Finding the Third Proportional to 812,712 and 1,918,650

Step by Step Solution

1. Step 1: Write the proportion equation
   812,712 : 1,918,650 = 1,918,650 : x
2. Step 2: Convert to fraction form
   812,712/1,918,650 = 1,918,650/x
3. Step 3: Cross multiply
   812,712x = 1,918,650 × 1,918,650
4. Step 4: Simplify right side
   812,712x = 3,681,217,822,500
5. Step 5: Solve for x
   x = 3,681,217,822,500/812,712
6. Step 6: Final answer
   x = 4,529,547.76