Finding the Third Proportional to 28,905,612 and 42,559,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,905,612 : 42,559,981.50 = 42,559,981.50 : x
2. Step 2: Convert to fraction form
   28,905,612/42,559,981.50 = 42,559,981.50/x
3. Step 3: Cross multiply
   28,905,612x = 42,559,981.50 × 42,559,981.50
4. Step 4: Simplify right side
   28,905,612x = 1,811,352,025,280,342.25
5. Step 5: Solve for x
   x = 1,811,352,025,280,342.25/28,905,612
6. Step 6: Final answer
   x = 62,664,372.07