Finding the Third Proportional to 28,725,816 and 42,986,947.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,725,816 : 42,986,947.50 = 42,986,947.50 : x
2. Step 2: Convert to fraction form
   28,725,816/42,986,947.50 = 42,986,947.50/x
3. Step 3: Cross multiply
   28,725,816x = 42,986,947.50 × 42,986,947.50
4. Step 4: Simplify right side
   28,725,816x = 1,847,877,655,367,756.25
5. Step 5: Solve for x
   x = 1,847,877,655,367,756.25/28,725,816
6. Step 6: Final answer
   x = 64,328,117.10