Finding the Third Proportional to 42,415,528.50 and 64,856,902.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,415,528.50 : 64,856,902.50 = 64,856,902.50 : x
2. Step 2: Convert to fraction form
   42,415,528.50/64,856,902.50 = 64,856,902.50/x
3. Step 3: Cross multiply
   42,415,528.50x = 64,856,902.50 × 64,856,902.50
4. Step 4: Simplify right side
   42,415,528.50x = 4,206,417,801,894,506
5. Step 5: Solve for x
   x = 4,206,417,801,894,506/42,415,528.50
6. Step 6: Final answer
   x = 99,171,646.58