Finding the Third Proportional to 561,109.50 and 1,210,792.50

Step by Step Solution

1. Step 1: Write the proportion equation
   561,109.50 : 1,210,792.50 = 1,210,792.50 : x
2. Step 2: Convert to fraction form
   561,109.50/1,210,792.50 = 1,210,792.50/x
3. Step 3: Cross multiply
   561,109.50x = 1,210,792.50 × 1,210,792.50
4. Step 4: Simplify right side
   561,109.50x = 1,466,018,478,056.25
5. Step 5: Solve for x
   x = 1,466,018,478,056.25/561,109.50
6. Step 6: Final answer
   x = 2,612,713.70