Finding the Third Proportional to 909,622.50 and 1,980,637.50

Step by Step Solution

1. Step 1: Write the proportion equation
   909,622.50 : 1,980,637.50 = 1,980,637.50 : x
2. Step 2: Convert to fraction form
   909,622.50/1,980,637.50 = 1,980,637.50/x
3. Step 3: Cross multiply
   909,622.50x = 1,980,637.50 × 1,980,637.50
4. Step 4: Simplify right side
   909,622.50x = 3,922,924,906,406.25
5. Step 5: Solve for x
   x = 3,922,924,906,406.25/909,622.50
6. Step 6: Final answer
   x = 4,312,695.55